1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63cac73175635b2fceed725d45797d719a1ba0264fd7d40d039a1738829b538. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d20d4a1f-3682-435a-b4d6-1cad403a8be0.json and https://artists.proofprofile.net/proofs/artist/d20d4a1f-3682-435a-b4d6-1cad403a8be0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91473a9acb4ea3ffc0ffb7901a45a043cbff73c83d0f5268672b26b9b3b6a31d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJL2503686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ec14a6f03a336424768dc5f73f5391bf084c6e2ff635e6f0418af198422f0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e0dd944bdf2fb6ba2323eeb438c94fec189e44d091520ece2bbece826724b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb994503b269a2b36204a958f4ba0eb9a8dcd8e778193b3fb545366e85ec85e11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJL2503713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee2c65fd9b9a9218bf982a7c47d417f17d7b1631f0f60c915af794c36c9a980. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c62e459e16b19d008c5b7ccd184a1c2cca6371d8f73b9741a893f3752474a62. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJL2503720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dff5a49b797692e50986f6721f72aba9cdb3adc0fb710f305a63129c790556. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefc0ddb6028c52c193d290a290445a34b9a575b720f9000ab5e7edf7b925e30. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b230459e9b12302cad824bc4ec446be73061b8d4a9b3a52d7a3ecd5625f427. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d4afb317237fc3d82da6bdbee9b58ea562b3704f5d740b149a58bfe9526b8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd9607fdad6d3050a4233396faf3bef533d60e5a981a173b82ddbe88485e7f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b1c623c981b3ac6b7c2803f17cca82243a1a794c39dc314b98013282ccb317. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e828e99455c988fcdff9ab32631e3ed0ddb3a7c22ba7519d55eefda3bd15ad7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c573cffb529a72b4d3545052872fec10390b8f0919571d60ec8ade87e6df1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca893baa74dbaa9f676d900df3198cf0745f034324a9877ee49008a8634d674. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c044ee614a8c72297158bc0680aafc8ceab2f11e0313223bfe9e090abb6967. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJK2503752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf438a389a27d5628e2a5556a58b9b2a97567b27892c34747e6df2ac8a848af38. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3913a837c7fb5aba82eadff1961b36dc5e7b7c27724f8d658275ff836c8fd634. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77f7f8feeb432d266d2d9e2d437c9d2d262d2d21322dc499163634a414f502. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c87b0087379509125aaaf340078765554d756f97ea34e1714bfb3a438b02da. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fc966e132a49e0ad48530079ba546cb8f470c87981a1719bb4196097f028f3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d86458c307076a0fa07feebe6f4d1e4c530bd11ec96bad910d0b387839bbfe. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ec285c990f2460d7480d006c3c71117a8b1dea41c3d9fd79326971b838b15. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:33:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a33d99b71bc9a6668a3f109bf8e39544e1de870a1104a6ee127bd019253ed3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3766e41ed6df64967227c0ce16a9ac89ea56b675ec3333ed1535659a99e2d1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d5d0800896b8f639440bad27ae4bbd2652d94799b1a723eed11dd2fb24259. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149ed467dc0428fe0107e15cdd26c4615273990479757e85ab29bfd0b765c4f5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26726278cbe5f26684357bd723d0d66107af3687c1dca2fb773e81e51ccba42d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c7e917e195c7905e4362343cd6908b51d9855c3e6d281a45b4b22da7db9002. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76764629f042ac99eaed58e6d3e35c775e26b633d70f28031ffb027f0e0b0770. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d64d5f50ed712474ce4a4f79cac75e36b28a81ecdb1ed0d2198add44e82d90. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2508022.